This is the 6453rd most frequent Polish word.
chmielewskiej
"Chmielewskiej" is a possessive or adjectival form related to the surname "Chmielewska," meaning "of Chmielewska" or "pertaining to Chmielewska."
Here, 'Chmielewskiej' is in its genitive form, indicating possession of the book.
To jest książka Chmielewskiej.
This is Chmielewska's book.
The word 'Chmielewskiej' is in the genitive case here, showing admiration for her creative work.
Podziwiam twórczość Chmielewskiej.
I admire Chmielewska's literary work.
In this instance, 'Chmielewskiej' is in the instrumental case, following the preposition 'z'. This implies interaction with her.